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Barcode am Ausweis um Steuerzeichen erweiterbar (closes Issue #369) #380

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Barcode am Ausweis um Steuerzeichen erweiterbar (closes Issue #369) #380

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b144f0f
Barcode am Ausweis um Steuerzeichen erweiterbar (closes Issue #369)
Geekados Apr 10, 2026
bae1f7e
Code-Ergänzung für die Barcode-Erstellung
Geekados Apr 17, 2026
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8 changes: 6 additions & 2 deletions .env_example
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,6 @@ BARCODE_MINCODELENGTH=3
# 💾 Show backup button in the top navigation bar (1 = show, 0 = hide)
ADMIN_BUTTON_SWITCH=1


#############################################
# 🏫 BUSINESS CONFIGURATION
#############################################
Expand Down Expand Up @@ -152,4 +151,9 @@ USERLABEL_LINE_3=["User.schoolGrade","90%","3%","35vw","2pt","black",12]

# 🔲 Barcode for user labels
# Format: [top, left, width, height, version]
USERLABEL_BARCODE=["80%","63%","3cm","1.6cm","code128"]
USERLABEL_BARCODE=["80%","63%","3cm","1.6cm","code128"]

# Prefix und Suffix für den Barcode.
# Beispiele: Escape: \x1B | Enter: \x0D | Tabulator: \x09 | Backspace: \x08 | Line Feed: \x0A | Home (Pos 1): \x01
USERLABEL_BARCODE_PREFIX="" # Optionales Steuerzeichen vor Eingabe der Ausweisnummer (z.B. ESC)
USERLABEL_BARCODE_SUFFIX="" # Suffix für den Barcode (z.B. um mit einem Zeilenumbruch zu enden)
20 changes: 17 additions & 3 deletions pages/api/report/userlabels/index.tsx
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Expand Up @@ -94,6 +94,18 @@ const barcodeMinLength: number =
? parseInt(process.env.BARCODE_MINCODELENGTH)
: DEFAULT_BARCODE_MINCODELENGTH;

// Postfix & Prefix for Barcode
// Hilfs-Funktion zum "Auflösen" von Hex-Strings aus Barcode Prefix/Suffix
const parseEnv = (str: string) =>
str.replace(/\\x([0-9A-Fa-f]{2})/g, (_, hex) => String.fromCharCode(parseInt(hex, 16)))
.replace(/\\r/g, "\r")
.replace(/\\n/g, "\n")
.replace(/\\t/g, "\t");

const barcodePrefix = parseEnv(process.env.USERLABEL_BARCODE_PREFIX || "");
const barcodeSuffix = parseEnv(process.env.USERLABEL_BARCODE_SUFFIX || "");


// =============================================================================
// Styles
// =============================================================================
Expand Down Expand Up @@ -221,13 +233,15 @@ const generateBarcode = async (id: string) => {

try {
const png = await bwipjs.toBuffer({
bcid: BARCODE_SETTINGS[4], // Barcode type (e.g., 'code128')
text: barId,
bcid: BARCODE_SETTINGS[4],
text: barcodePrefix + barId + barcodeSuffix,
alttext: barId, // Zeigt unten nur die Nummer an
scale: 3,
parse: true,
height: 10,
includetext: true,
textxalign: "center",
});
});

return (
<PdfImage
Expand Down